Visa convenience fee rules
KB article ID:1900
Note 11/18/2015: This is moot, since Judici doesn't charge convenience fees
Visa doesn't allow variable convenience fees. Note this language in section 5.6.2.1 of the Visa Product and Service Rules : [Cnv link, but link is dead, http://usa.visa.com/download/about_visa/15-April-2015-Visa-Rules-Public.pdf]